64 



striatis, margine oblique plicato : costis quinque, crassis, 

 rotundatis, gradatim declinentibus ; colore fulvo-rufescente, 

 fasciis albis, angulatis^ subtus fusco-marginatis variegato, intus 

 albo. Long. 1.15.; lat. 0. 37- ; alt. 1. 25. ; poll. 



Nearly oval, rather flat, equilateral, with fine radiating 

 stricG, rather swelled at the margin; the auricles nearly 

 equal, striated ; hinge obliquely plicated ; the ribs, 5 in 

 number, rounded, shallow, of a dull fawn colour, variegated 

 with angular bands of white, margined with brown. The 

 whole surface of the shell has a somewhat velvety appearance. 



Macassar, Mr. Hinds. 



56. P. NODULiFERus. (pi. xiii. f. 38, 39 and pi. xvi. f. 

 94.) nob. 



T. sub-trigona, sub-compressa, radiatim striata, eequivalvi ; 

 auriculis radiatim sulcatis, anticis paululum majoribus ; 

 cardine oblique plicato; costis octo, crassis, rotundatis, 

 nodulosis, interne ad marginem plicatis ; colore rufo, intvis 

 nebuloso, extiis angulatim maculato. Long. 1. 35. ; lat. 0. 50. ; 

 alt. 1. 46. ; poll 



Rather trigonal, rather compressed, radiately striated, 

 equivalve ; the auricles radiately sulcated, the anterior ones 

 rather larger than the posterior ; hinge obliquely plicated ; 

 the riljs, 8 in number, are thick, rounded, slightly knobbed, 

 internally plicated at the margin ; the colour is red, clouded 

 inside, with defined angular spots outside. This species differs 

 from P. corallinoides in being more angular and compressed, 

 less spread at the sides, and having the nodules less distinct. 

 Mr. Morris's collection. 



57. P. SUBPLICATUS. (pi. xiii. f. 37:, ^^'^ V^' ^^^' ^' '^^i ^^y 

 81.) nob. 



T. ajquivalvi, sub-trigona, sub-eequilaterali, depressa, radia- 

 tim striata ; interne Isevi, leviter undulata ; auriculis magnis, 

 striatis, posticis majoribus, sub-rectangulatis; cardine oblique 

 plicato; costis quinque, latis, vix elevatis, interstitiis latioribus; 

 colore pallide fulvo, fusco-nigrescente, angulatim variegato. 

 Long. 1. 45.; lat. 0. 45 ; alt. 1. 57. ; poll. 



Rather flat, nearly equilateral, and radiated with fine striae ; 

 the auricles are broad, the posterior ones rather broader than 

 the anterior ; the hinge is obliquely plicated ; the ribs, 5 in 

 number, are slightly elevated; the ground colour is light 

 cream, with broad angular patches of dark blackish brown, or 

 l)rick red; a great part of the inside is brown, particularly 

 about the hinge. The obliquity of the plicae on the hinge, 

 the flatness of the shell, and the slight elevation of the ribs, 

 serve to distinguish this species from P. Plica. Amboina. 



